947986903 has 2 divisors, whose sum is σ = 947986904. Its totient is φ = 947986902.

The previous prime is 947986877. The next prime is 947986927. The reversal of 947986903 is 309689749.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 947986903 - 2²¹ = 945889751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947936903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473993451 + 473993452.

It is an arithmetic number, because the mean of its divisors is an integer number (473993452).

Almost surely, 2^947986903 is an apocalyptic number.

947986903 is a deficient number, since it is larger than the sum of its proper divisors (1).

947986903 is an equidigital number, since it uses as much as digits as its factorization.

947986903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 947986903 is about 30789.3959505541. The cubic root of 947986903 is about 982.3527059610.

The spelling of 947986903 in words is "nine hundred forty-seven million, nine hundred eighty-six thousand, nine hundred three".